11890517 has 4 divisors (see below), whose sum is σ = 12407520. Its totient is φ = 11373516.

The previous prime is 11890511. The next prime is 11890553. The reversal of 11890517 is 71509811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71509811 = 317 ⋅225583.

It is a cyclic number.

It is not a de Polignac number, because 11890517 - 2¹⁸ = 11628373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11890511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258467 + ... + 258512.

It is an arithmetic number, because the mean of its divisors is an integer number (3101880).

Almost surely, 2^11890517 is an apocalyptic number.

It is an amenable number.

11890517 is a deficient number, since it is larger than the sum of its proper divisors (517003).

11890517 is an equidigital number, since it uses as much as digits as its factorization.

11890517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517002.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11890517 is about 3448.2628960101. The cubic root of 11890517 is about 228.2444605321.

The spelling of 11890517 in words is "eleven million, eight hundred ninety thousand, five hundred seventeen".